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Convert arithmetic ops to logical ops in byte alignment

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This commit is contained in:
unix-ninja 2018-10-17 08:54:52 -04:00
parent d66200a406
commit b29b7b8188
2 changed files with 20 additions and 16 deletions
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18
OpenCL/m18100_a0-pure.cl
View File

@ -66,16 +66,17 @@ __kernel void m18100_mxx (__global pw_t *pws, __constant const kernel_rule_t *ru
unsigned int otp_code = 0;
// grab 4 consecutive bytes of the hash, starting at offset
switch(otp_offset%4)
// on some systems, &3 is faster than %4, so we will use it in our switch()
switch(otp_offset&3)
{
case 1:
otp_code = ((ctx.opad.h[otp_offset/4] & 0xffffff) << 8) | ((ctx.opad.h[otp_offset/4+1] % 0xffffff00) >> 24);
otp_code = ((ctx.opad.h[otp_offset/4] & 0x00ffffff) << 8) | ((ctx.opad.h[otp_offset/4+1] & 0xfffffeff) >> 24);
break;
case 2:
otp_code = ((ctx.opad.h[otp_offset/4] & 0xffff) << 16) | ((ctx.opad.h[otp_offset/4+1] % 0xffff0000) >> 16);
otp_code = ((ctx.opad.h[otp_offset/4] & 0x0000ffff) << 16) | ((ctx.opad.h[otp_offset/4+1] & 0xfffeffff) >> 16);
break;
case 3:
otp_code = ((ctx.opad.h[otp_offset/4] & 0xff) << 24) | ((ctx.opad.h[otp_offset/4+1] % 0xffffff00) >> 8);
otp_code = ((ctx.opad.h[otp_offset/4] & 0x000000ff) << 24) | ((ctx.opad.h[otp_offset/4+1] & 0xfffffeff) >> 8);
break;
default:
otp_code = ctx.opad.h[otp_offset/4];
@ -158,16 +159,17 @@ __kernel void m18100_sxx (__global pw_t *pws, __constant const kernel_rule_t *ru
unsigned int otp_code = 0;
// grab 4 consecutive bytes of the hash, starting at offset
switch(otp_offset%4)
// on some systems, &3 is faster than %4, so we will use it in our switch()
switch(otp_offset&3)
{
case 1:
otp_code = ((ctx.opad.h[otp_offset/4] & 0xffffff) << 8) | ((ctx.opad.h[otp_offset/4+1] % 0xffffff00) >> 24);
otp_code = ((ctx.opad.h[otp_offset/4] & 0x00ffffff) << 8) | ((ctx.opad.h[otp_offset/4+1] & 0xfffffeff) >> 24);
break;
case 2:
otp_code = ((ctx.opad.h[otp_offset/4] & 0xffff) << 16) | ((ctx.opad.h[otp_offset/4+1] % 0xffff0000) >> 16);
otp_code = ((ctx.opad.h[otp_offset/4] & 0x0000ffff) << 16) | ((ctx.opad.h[otp_offset/4+1] & 0xfffeffff) >> 16);
break;
case 3:
otp_code = ((ctx.opad.h[otp_offset/4] & 0xff) << 24) | ((ctx.opad.h[otp_offset/4+1] % 0xffffff00) >> 8);
otp_code = ((ctx.opad.h[otp_offset/4] & 0x000000ff) << 24) | ((ctx.opad.h[otp_offset/4+1] & 0xfffffeff) >> 8);
break;
default:
otp_code = ctx.opad.h[otp_offset/4];

18
OpenCL/m18100_a3-pure.cl
View File

@ -75,16 +75,17 @@ __kernel void m18100_mxx (__global pw_t *pws, __global const kernel_rule_t *rule
unsigned int otp_code = 0;
// grab 4 consecutive bytes of the hash, starting at offset
switch(otp_offset%4)
// on some systems, &3 is faster than %4, so we will use it in our switch()
switch(otp_offset&3)
{
case 1:
otp_code = ((ctx.opad.h[otp_offset/4] & 0xffffff) << 8) | ((ctx.opad.h[otp_offset/4+1] % 0xffffff00) >> 24);
otp_code = ((ctx.opad.h[otp_offset/4] & 0x00ffffff) << 8) | ((ctx.opad.h[otp_offset/4+1] & 0xfffffeff) >> 24);
break;
case 2:
otp_code = ((ctx.opad.h[otp_offset/4] & 0xffff) << 16) | ((ctx.opad.h[otp_offset/4+1] % 0xffff0000) >> 16);
otp_code = ((ctx.opad.h[otp_offset/4] & 0x0000ffff) << 16) | ((ctx.opad.h[otp_offset/4+1] & 0xfffeffff) >> 16);
break;
case 3:
otp_code = ((ctx.opad.h[otp_offset/4] & 0xff) << 24) | ((ctx.opad.h[otp_offset/4+1] % 0xffffff00) >> 8);
otp_code = ((ctx.opad.h[otp_offset/4] & 0x000000ff) << 24) | ((ctx.opad.h[otp_offset/4+1] & 0xfeffffff) >> 8);
break;
default:
otp_code = ctx.opad.h[otp_offset/4];
@ -178,16 +179,17 @@ __kernel void m18100_sxx (__global pw_t *pws, __global const kernel_rule_t *rule
unsigned int otp_code = 0;
// grab 4 consecutive bytes of the hash, starting at offset
switch(otp_offset%4)
// on some systems, &3 is faster than %4, so we will use it in our switch()
switch(otp_offset&3)
{
case 1:
otp_code = ((ctx.opad.h[otp_offset/4] & 0xffffff) << 8) | ((ctx.opad.h[otp_offset/4+1] % 0xffffff00) >> 24);
otp_code = ((ctx.opad.h[otp_offset/4] & 0x00ffffff) << 8) | ((ctx.opad.h[otp_offset/4+1] & 0xfffffeff) >> 24);
break;
case 2:
otp_code = ((ctx.opad.h[otp_offset/4] & 0xffff) << 16) | ((ctx.opad.h[otp_offset/4+1] % 0xffff0000) >> 16);
otp_code = ((ctx.opad.h[otp_offset/4] & 0x0000ffff) << 16) | ((ctx.opad.h[otp_offset/4+1] & 0xfffeffff) >> 16);
break;
case 3:
otp_code = ((ctx.opad.h[otp_offset/4] & 0xff) << 24) | ((ctx.opad.h[otp_offset/4+1] % 0xffffff00) >> 8);
otp_code = ((ctx.opad.h[otp_offset/4] & 0x000000ff) << 24) | ((ctx.opad.h[otp_offset/4+1] & 0xfffffeff) >> 8);
break;
default:
otp_code = ctx.opad.h[otp_offset/4];